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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "media/audio/audio_input_device.h" | 5 #include "media/audio/audio_input_device.h" |
6 | 6 |
7 #include <stdint.h> | 7 #include <stdint.h> |
8 #include <utility> | 8 #include <utility> |
9 | 9 |
10 #include "base/bind.h" | 10 #include "base/bind.h" |
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305 // Create vector of audio buses by wrapping existing blocks of memory. | 305 // Create vector of audio buses by wrapping existing blocks of memory. |
306 uint8_t* ptr = static_cast<uint8_t*>(shared_memory_.memory()); | 306 uint8_t* ptr = static_cast<uint8_t*>(shared_memory_.memory()); |
307 for (int i = 0; i < total_segments_; ++i) { | 307 for (int i = 0; i < total_segments_; ++i) { |
308 media::AudioInputBuffer* buffer = | 308 media::AudioInputBuffer* buffer = |
309 reinterpret_cast<media::AudioInputBuffer*>(ptr); | 309 reinterpret_cast<media::AudioInputBuffer*>(ptr); |
310 std::unique_ptr<media::AudioBus> audio_bus = | 310 std::unique_ptr<media::AudioBus> audio_bus = |
311 media::AudioBus::WrapMemory(audio_parameters_, buffer->audio); | 311 media::AudioBus::WrapMemory(audio_parameters_, buffer->audio); |
312 audio_buses_.push_back(std::move(audio_bus)); | 312 audio_buses_.push_back(std::move(audio_bus)); |
313 ptr += segment_length_; | 313 ptr += segment_length_; |
314 } | 314 } |
| 315 |
| 316 // Indicate that browser side capture initialization has succeeded and IPC |
| 317 // channel initialized. This effectively completes the |
| 318 // AudioCapturerSource::Start()' phase as far as the caller of that function |
| 319 // is concerned. |
| 320 capture_callback_->OnCaptureStarted(); |
315 } | 321 } |
316 | 322 |
317 void AudioInputDevice::AudioThreadCallback::Process(uint32_t pending_data) { | 323 void AudioInputDevice::AudioThreadCallback::Process(uint32_t pending_data) { |
318 // The shared memory represents parameters, size of the data buffer and the | 324 // The shared memory represents parameters, size of the data buffer and the |
319 // actual data buffer containing audio data. Map the memory into this | 325 // actual data buffer containing audio data. Map the memory into this |
320 // structure and parse out parameters and the data area. | 326 // structure and parse out parameters and the data area. |
321 uint8_t* ptr = static_cast<uint8_t*>(shared_memory_.memory()); | 327 uint8_t* ptr = static_cast<uint8_t*>(shared_memory_.memory()); |
322 ptr += current_segment_id_ * segment_length_; | 328 ptr += current_segment_id_ * segment_length_; |
323 AudioInputBuffer* buffer = reinterpret_cast<AudioInputBuffer*>(ptr); | 329 AudioInputBuffer* buffer = reinterpret_cast<AudioInputBuffer*>(ptr); |
324 | 330 |
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352 capture_callback_->Capture( | 358 capture_callback_->Capture( |
353 audio_bus, | 359 audio_bus, |
354 buffer->params.hardware_delay_bytes / bytes_per_ms_, // Delay in ms | 360 buffer->params.hardware_delay_bytes / bytes_per_ms_, // Delay in ms |
355 buffer->params.volume, buffer->params.key_pressed); | 361 buffer->params.volume, buffer->params.key_pressed); |
356 | 362 |
357 if (++current_segment_id_ >= total_segments_) | 363 if (++current_segment_id_ >= total_segments_) |
358 current_segment_id_ = 0; | 364 current_segment_id_ = 0; |
359 } | 365 } |
360 | 366 |
361 } // namespace media | 367 } // namespace media |
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